Attaching disks to multiple controllers of the same type has been
allowed so far. Now spanning between multiple controllers is disallowed
at all by IMSM metadata.
Signed-off-by: Marcin Tomczak <marcin.tomczak@intel.com>
Reviewed-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
"freesize" can be equal 0, particularly after rounding to the chunk's size.
Creating should be aborted in such case.
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Recent patch closed 'mdfd' before calling wait_for, which means
it doesn't work.
Put the close back in the right place.
Signed-off-by: NeilBrown <neilb@suse.de>
commit aacb2f816a
Assemble: add support for replacement devices.
broke the restoring of the 'critical section' because it messed up the
list of file descriptors passed to Grow_restart. Put it back the way
it should be.
Signed-off-by: NeilBrown <neilb@suse.de>
Currently, action=force-spare isn't effective at all as I'm not
sure what is really sensible.
This patch allows a device that was part of an array, but has been
removed, to be added as a spare of passed to --incremental while
force-spare is active.
If it is can be re-added, that done first. If it fails, we add it as
a spare.
Signed-off-by: NeilBrown <neilb@suse.de>
It is important to check for compatibility with 'platform' or
Option ROM when creating or changing and array. However there is no
real need when simply assembling the array.
On some systems there are situations where the platform information is
not available. e.g. on some UEFI systems, UEFI is not available
during 'kdump' handling. This makes it impossible to assemble
an IMSM array to receive the dump.
So remove the requirements that the platform be visible to assemble
an IMSM array.
Signed-off-by: NeilBrown <neilb@suse.de>
commit cb19a251a5
super1: reserve at least 2 chunks for reshape headroom.
reserved more space in a RAID5, so we need to update to array
sizes when reshaping.
Also make sure reshape tests we change the shape: raid5->raid1
was failing and we didn't notice.
Signed-off-by: NeilBrown <neilb@suse.de>
Commit 5da9ab9874
Grow_reshape re-factor
in mdadm-3.2 broke conversion from RAID5 and RAID1 - and we
never noticed.
This fixes it.
Signed-off-by: NeilBrown <neilb@suse.de>
Currently if a member of a 1.x array is queried, mdadm will
fail to find the name of the active md array if there is one.
Change the lookup to use the mapfile - now it works.
Signed-off-by: NeilBrown <neilb@suse.de>
Now that we recognise partition tables as a sort of metadata
we need to be careful in --query not to say that a device
with a partition table looks like a device in an array.
Testing ->compare_super for NULL is an easy way to do that.
Signed-off-by: NeilBrown <neilb@suse.de>
If we are asked to monitor a RAID0 or Linear - which cannot be
monitored - we complain with "Device Disappeared .... Wrong-Level".
However if the RAID0 or Linear is being requested because it is
in mdadm.conf then the message is inappropriate and confusing.
So track which arrays are added from the config file, and suppress
that message in that case.
Reported-by: "Johnson Yan" <johnson_yan@usish.com>
Signed-off-by: NeilBrown <neilb@suse.de>
As dev_open uses O_DIRECT it will fail on directories and such.
So we never get to report that it isn't a block device.
So do a 'stat' earlier and if it is a block device, report the
error there.
Signed-off-by: NeilBrown <neilb@suse.de>
Creating a new MD device with the name 'd-0' results in some
unexpected behavior, since mdadm sees that '-0' is a
non-negative integer and therefore makes a "partitionable"
device (/dev/md_d0). This is not the expected behavior,
since the documentation mentions 'dN' several places, and a
reboot brings it up as /dev/md/d-0. Make this consistent
by ensuring that the character immediately following 'd' is
a digit during creation.
Signed-off-by: NeilBrown <neilb@suse.de>
--detail needs to be read to report 2 devices in each slot,
and --examine need to report if the device is the original or
the replacement.
Signed-off-by: NeilBrown <neilb@suse.de>
--replace can be used to replace a device without completely failing
it. Once the replacement completes the device will be failed.
--with can indicate which of several spares to use.
Signed-off-by: NeilBrown <neilb@suse.de>
If a test failed when --keep-going is selected, give the
log file a name based on the test name, so that all the logs
can be examined afterwards.
Signed-off-by: NeilBrown <neilb@suse.de>
If a test sent anything to stdout, it would not get logged, and would
mess up the listing of test status.
Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: NeilBrown <neilb@suse.de>
As 'info->size' is signed, it cannot even hold values above
2TB.
But it isn't used much. sb->size is the important value and it
is unsigned.
So use that to check for overflow of size.
Reported-by: Eugene San <eugenesan@gmail.com>
Using "START_ARRAY" ioctl never really worked reliably,
was removed a decade ago, and just clutters the code.
So remove it.
Signed-off-by: NeilBrown <neilb@suse.de>
Apart from code movement, there is a small functional change here.
If the array is not successfully started, it is stopped.
Previously we would sometimes leave the array in a partially-assembled
but inactive state.
This just causes confusion.
"--incremental" can be used to partially assemble arrays.
Signed-off-by: NeilBrown <neilb@suse.de>
If a device is faulty, then that is all there is too it.
Even if it isn't 'removed' yet, it shouldn't be reported as 'spare'
or 'rebuilding'.
Signed-off-by: NeilBrown <neilb@suse.de>
Suggest to replace by the option name that 'make' use.
no error is only a developper hope.
Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: NeilBrown <neilb@suse.de>
And here's another trivial bugfix, now for spelling mistakes in various
places, authred by Sergey Kirpichev (Cc'ed) and carried in debian mdadm
package.
Signed-off-by: NeilBrown <neilb@suse.de>
When --uuid is specified in the command line, even for v0.90
superblock we override last portion of uuid with data from
--homehost, which is wrong (and disagrees with the manpage).
Only use homehost in super0 if no uuid is specified.
Signed-off-By: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: NeilBrown <neilb@suse.de>
Once we have found the devices we want, we need to load the
metadata from them and store it. This new function extracts that
functionality out of Assemble()
Signed-off-by: NeilBrown <neilb@suse.de>
Assemble() is way too big.
This patch starts cleaning it up by pulling the 'select_devices()'
function. This examines the device to make sure they all belong to
one array, or select those that do (depending on exact use case).
Signed-off-by: NeilBrown <neilb@suse.de>
open_container should open a container which contains the device,
but sometimes it would open another volume which contains the
device. Be more careful in 'holder' selection.
Signed-off-by: NeilBrown <neilb@suse.de>
If --incremental has partly assembled an array and
--assemble is asked to assemble it, the just finds remaining
devices and makes a new array. Not good.
So:
1/ modify locking policy so that assemble can be sure that
no --incremental is running once it locks the map file
2/ Assemble() checks the map file for a duplicate and adds to
that array instead of creating a new one.
Signed-off-by: NeilBrown <neilb@suse.de>
As it was the code would crash due to "mdstat" being NULL.
Code is now more sane, but hasn't been tested on an array that
needs to grow.
Signed-off-by: NeilBrown <neilb@suse.de>
mdadm --create /dev/md0 .... /dev/sda1:1024 /dev/sdb1:2048 ...
The size is in K unless a suffix: K M G is given.
The suffix 's' means sectors.
Signed-off-by: NeilBrown <neilb@suse.de>
When reducing the number of devices in a RAID10, we increase the
data offset to avoid the need for backup area.
If there is no room at the end of the device to allow this, we need
to first reduce the component size of each device. However if there
is room, we don't want to insist on that, otherwise growing then
shrinking the array would not be idempotent.
So find the min before/after space before analysing a RAID10 for
reshape, and if the after space is insufficient, reduce the total size
of the array and the component size accordingly.
Signed-off-by: NeilBrown <neilb@suse.de>
sometimes 0.1% isn't enough, though mostly only in testing.
We need one chunk for a successful reshape, so reserve 2.
Signed-off-by: NeilBrown <neilb@suse.de>
Some arrays (raid10) never need a backup file, so during assembly
we can avoid the whole Grow_continue check in that case.
Achieve this using a flag set by the metadata handler.
Also get "mdadm -I" to fail if a backup process would be
needed. It currently does fail as the kernel rejects things,
but it is nicer to have this explicit.
Signed-off-by: NeilBrown <neilb@suse.de>
RAID10 reshape requires that data_offset be changed.
So we only allow it if the new_data_offset attribute is available,
and we compute a suitable change in data offset.
Signed-off-by: NeilBrown <neilb@suse.de>
Gilles Espinasse
Marcin Tomczak
Lukasz Dorau
NeilBrown
Justin Maggard
Michael Tokarev